 | Tappe, Sebastian, Jenner, George A., Foley, Stephen F., Heaman, Larry, Besserer, Dean, Kjarsgaard, Bruce A., Ryan, Bruce (2004) Torngat ultramafic lamprophyres and their relation to the North Atlantic Alkaline Province. Lithos, 76 (1) 491-518 doi:10.1016/j.lithos.2004.03.040 | Journal (article/letter/editorial) | | their relation to the North Atlantic Alkaline Province Sebastian Tappe a,b,*, George A. Jenner b, Stephen...carbonatite. Recognized rock varieties are aillikite, mela-aillikite and subordinate carbonatite. Carbonatite...content and a lack of clinopyroxene. In contrast, mela-aillikites are richer in mafic silicate minerals...Al2O3, Na2O and lower CO2 content distinguish the mela-aillikites from the aillikites. Whereas the bulk...trace element concentrations of the aillikites and mela-aillikites overlap, there is no fractional crystallization |  | | Journal (article/letter/editorial) | | !963). 1 -- Lithcs 4:1 2 j.B. WRIGIIT The mela-nephelinite parent Ifi a survey of sub-provinces...the Kenya Rift Valley (Wright 1965), two kinds of mela-nephelinite were distinguished on the basis of their...and associations. One kind is fresh olivine-phyric mela-nephelinite (olivine nephelinite of Coombs & Wilkinson...trachytes as salic associates. In such assemblages the mela-nephelinites can perhaps be regarded si~mply as...The other kind is a more altered olivine-phyric mela-nephelinite, rich in titaniferous augite phenocrysts |  | | Journal (article/letter/editorial) | | "ores" (magnetite, ilmenite, chromite, pyrite, hematite, etc.) Cassiterite Garnet Minor Primary epidote...in a single family, but classifies the various hematite, ilmenite, magnetite, etc., ores as subfamilies...rocks of Class i, "meso-" those of Class 2, and "mela-" those of Class 3. In most cases the prefix "meso-"...understood. Thus there are leuco-granites, granites, and mela-granites, respectively, in Classes i, 2, and 3....(=316) 2 3 4 5 6 Mela-orthogranite (=316) (=316) 7 Mela-albite-granite Melagranite Mela-calcigranite |  | | Journal (article/letter/editorial) | | group including hornblendite, hornblende gabbro, and mela blendic * Present City address: 484, this ...consists of various kinds of hornblende gabbro and mela albite diorite with a small amount of leuco albite... gabbro-diorite sequence margins and encloses mela albite diorite bodies (Figs. 1 and 3). In the northern...optical An86: Appinitic of in Tables 2 2. Mela albite An extensive and is Main On boundary...Sequence to ilmenite. content the the discordant Mela albite of albite, The usually the to while | | King, Trude V.V., Hoefen, Todd M., Kokaly, Raymond F., Livo, Keith E., Johnson, Michaela R., Giles, Stuart A. (2013) Hyperspectral surface materials map of quadrangle 3368, Ghazni (515) and Gardez (516) quadrangles, Afghanistan, showing iron-bearing minerals and other materials. Open-File Report 2013-1210. US Geological Survey doi:10.3133/ofr20131210b | Report (issue) | | Khel 371 Ramak 2689 30' 1968 3492 30' Khost Mela 2597 3577 2720 370 Zurmat Shwak 3815 2799...Epidote (1,040,965) Zambar 3105 3210 3369 Hematite, coarse-grained (1) Not classified (8,630,606)...Fe2+Fe3+ type 3 (28,802) OTHER SYMBOLS 3626 3181 Hematite, medium-grained (0) [Not all symbols shown may...type 2 (6,146,898) Jani Khel 3447 3172 372 Hematite, fine-grained (0) Fe3+ type 2 (1) 2517 Sayid... Fe2+Fe3+ type 1 (1,754,195) 374 3110 45' Hematite, nanocrystalline (83,897) Clark, R.N., Swayze |  | | Journal (article/letter/editorial) | | southern part of the Arkhangelsk diamondiferous province (ADP), containing magmatic material and rare kimberlite...region and form the Arkhangelsk diamondiferous province (ADP, with an area of ~19,000 km2 [1]). Two major...Arkhangelsk Diamondiferous Province Figure the Arkhangelsk Diamondiferous Province (ADP) (ADP) and location...field and a component of the Kepino, Verhotina and Mela fields. Defining three main groups of ADP kimberlites...fieldkimberlites kimberlitesis theclose Kepino, Verhotina Mela fields. DefiningAfrica three[15]. mainThe groups |  | | Journal (article/letter/editorial) | | they closely resemble the --500 Ma post-tectonic mela-syenite to alkali basalt dikes widely occurring...intruded by post-tectonic biotite-rich clinopyroxene mela-syenite dikes. ~ C h a r l e s Mts. 0o / map...contains aligned globules and needles of ilmenite and hematite. The biotite contains up to 5% TiOz (Ti > 0.45)...assemblage, modal composition and texture. It ranges from mela-syenite to leuco-quartz syenite, with melanocratic...(Schreurs, 1985; Luhr et al., 1984). Ilmenite has fine hematite exsolution lamellae and coexists with magnetite |  | Prokopyev, Ilya, Starikova, Anastasiya, Doroshkevich, Anna, Nugumanova, Yazgul, Potapov, Vladislav (2020) Petrogenesis of Ultramafic Lamprophyres from the Terina Complex (Chadobets Upland, Russia): Mineralogy and Melt Inclusion Composition. Minerals, 10 (5) 419 doi:10.3390/min10050419 | Journal (article/letter/editorial) | | investigated. The rocks identified were aillikites, mela-aillikites, and damtjernites, and they were originally... perovskite, Ti-rich garnet, and apatite [5,6]. Mela-aillikites have a color index >90% because of the...melilitites, ultramafic lamprophyres (ailllikites, mela-aillikites and damtjernites), and carbonatites,...with the formation of the Siberian large igneous province (LIP) (Figure 1a) [7], containing flood basalts... carbonatites, and UMLs of the Maymecha–Kotuy province [14–17], as well as with Siberian kimberlite from |  | | Journal (article/letter/editorial) | | 60 to 75 and are thus given the special name of mela-basanite (A, Fig. 2) to distinguish them from other... 1972) is silicaoversaturated. Petrography The mela-basanites are the most primative lavas found in...A. K. Ferguson. 3. Mela-basanite, C2811. (Holmes and Harwood, 1937, p. 61). 4 Mela-basanite, Toro-Ankole...liquid composition (A, see text) and a primitive mela-basanite lava (T, see Anal. 4, Table 2) analysed...ferrosilite; En enstatite; Fo Fosterite; Fa fayalite; Hm hematite; Ilm ilmenite; Mt magnetite; Usp ulvSspinel 38 |  | | Journal (article/letter/editorial) | | Grib kimberlite pipe (Arkhangelsk diamondiferous province, Russia) E.V. Shchukina a,*, A.M. Agashev a, S...central part of the Arkhangelsk diamondiferous province (ADP) are presented. We studied the major- and...basalts of the Tur’ino field, and carbonatites of the Mela field of the ADP. The REE patterns of the peridotite...mantle metasomatism; Arkhangelsk diamondiferous province Introduction Peridotite xenoliths with signs...al., 1999). In the Arkhangelsk diamondiferous province, only products of low-temperature modal metasomatism |  | | Catalog/List | | conchoidal fracture and very minor associated reddish Hematite. 3x2,j-xl". £2.75. CHALCOPYRITE. Dreislar, S8uerland...fragments of white uartz 1-litL a little bla-::kish Mela conite in a sso..:iation. 4x2~-xlt". £11. n interEOsting...Ch~lcedonic Quartz. 4x3". £8·75. FRaN~EVI~LEITEo Mounana, Gabon. Su erb, lustrous, light orange, sheafs of pbty...4x2ix2". £2.25; Specimen B - 2tx2x2". £1. 75. HEMATITE variety "KIDNEY OhE". Florence rHne, Egremont |  | McFall, Katie A., Naden, Jonathan, Roberts, Stephen, Baker, Tim, Spratt, John, McDonald, Iain (2018) Platinum-group minerals in the Skouries Cu-Au (Pd, Pt, Te) porphyry deposit. Ore Geology Reviews, 99. 344-364 doi:10.1016/j.oregeorev.2018.06.014 | Journal (article/letter/editorial) | | al., 2002), in the Serbomacedonian metallogenic province (SMP). The SMP is associated with Late Cretaceous...phase is represented by a series of porphyritic mela-syenite dykes which cross-cut and are cross-cut...dykes” described above. The porphyritic syenite and mela-syenite dykes are associated with main stage vein...syn-mineralisation porphyritic syenite and the porphyritic mela-syenite dykes, both of which cross-cut the early...phenocrysts in both this unit and the porphyritic mela-syenite dykes. Main stage veining is also associated |  | | Journal (article/letter/editorial) | | Distribution of kimberlite and aillikite in the Diamond Province of southern West Greenland: A regional perspective...xenolith and megacryst assemblages from the diamond province in southern West Greenland demonstrates very systematic...these regions are here referred to as the Diamond Province in southern West Greenland based on the occurrence...250 0.169 0.668 Calculated ilmenite endmembers Hematite 0.056 0.047 Ilmenite 0.210 0.311 Geikilite 0.717...and trace element compositions for aillikites and mela-aillikites from the Torngat region (Tappe et al |  | | Journal (article/letter/editorial) | | Feldspathoidal ro&s from the Cainozoic volcanic province of Ethiopia By M. J. LE BAS,Leicester *), and...feldspathoidal rocks in the Cainozoic volcanic province of Ethiopia is given. Ijolite and melanephelinite...melanephelinite are described for the first time from this province. The close relationship between cross-rift transcurrent...nepheline. There is also some iron-ore and secondary hematite. The texture indicates that the rock has been...crushed with the introduction of the iron-ore and hematite along lines of weakness. Although the ijolite |  | McCreesh, Matthew J. G., Yudovskaya, Marina A., Kinnaird, Judith A., Reinke, Christian (2018) Platinum-group minerals of the F and T zones, Waterberg Project, far northern Bushveld Complex: implication for the formation of the PGE mineralization. Mineralogical Magazine, 82 (3) 539-575 doi:10.1180/mgm.2018.83 | Journal (article/letter/editorial) | | pyroxenite and an upper feldspathic harzburgite to mela-troctolite that generally shows extensive serpentinisation...succession, a highly altered zone, dominated by hematite and quartz is believed to be the weathered top...sill correlates with the 1.1 Ga Umkondo Igneous Province (Huthmann et al., 2016). U/Pb dating of zircons...base overlain by coarse-grained harzburgite and mela-troctolite with xenoliths of feldspathic pyroxenite...anorthosite. The UZ is covered by a 3.5 m thick hematite-rich clay palaeosol along the erosional boundary |  | Starikova, Anastasiya, Prokopyev, Ilya, Doroshkevich, Anna, Ragozin, Alexey, Chervyakovsky, Vasily (2021) Polygenic Nature of Olivines from the Ultramafic Lamprophyres of the Terina Complex (Chadobets Upland, Siberian Platform) Based on Trace Element Composition, Crystalline, and Melt Inclusion Data. Minerals, 11 (4) 408 doi:10.3390/min11040408 | Journal (article/letter/editorial) | | includes several stages of the intrusion of aillikites, mela-aillikites, carbonatites, and damtjernites. The...plume activity forming the Siberian large igneous province (LIP), and the Chadobets UML-carbonatite complex...alkaline complex within the Siberian large igneous province (LIP) on the Siberian craton [37]. (b) Geological...intrusion of the Chadobets complex are aillikites and mela-aillikites (Figure 2). The rocks have a porphyry...overgrown by an Fe-enriched rim (Mg# 0.47–0.12). Mela-aillikites differ from the aillikites by the presence |  | | Journal (article/letter/editorial) | | magnesiumrich carbonatite to rauhaugite and rfidberg (hematite carbonatite). Ramberg (1973) has establishedby...o\o ^\ s- 30 Ijolite Ijolites and melteigites(mela-ijolites)consistof euhedral prismatic crystals of...Feo calculaEed by Iron Hill (Nash, 1972),from mela-nepheline syenites at Turja (Fig. 5; Mitchell, unpublished...ijolite seriesformed in the sequence ijolite, melanite mela-ijolite, silicocarbonatite,if the extent of Na and...46,219-236. Saether,E. (1957)The alkaline rock province ofthe Fen area in southern Norway. Kgl. Norske |  | CIGOLINI, Corrado, DI MARTINO, Mario, LAIOLO, Marco, COPPOLA, Diego, ROSSETTI, Piergiorgio, MORELLI, Marco (2012) Endogenous and nonimpact origin of the Arkenu circular structures (al‐Kufrah basin—SE Libya) Meteoritics & Planetary Science, 47 (11) 1772-1788 doi:10.1111/maps.12012 | Journal (article/letter/editorial) | | that involved the deposition of massive magnetite–hematite horizons (typical of iron oxide copper-gold deposits)...sandstones are locally overlain by massive magnetite–hematite bodies, whereas in the Arkenu 2 area such bodies...oxides) that is overlain by a massive magnetite–hematite unit with subhorizontal attitude and a thickness...of massive magnetite (partially transformed to hematite and ⁄ or limonitic products), with abundant centimeter-sized...sandstones and the overlying massive magnetite– hematite horizon is marked by a few-meters thick hydrothermal |  | Dongre, Ashish, Viljoen, K.S., Belyanin, G., Le Roux, Petrus, Malandkar, M. (2020) Petrogenesis of the diamondiferous Pipe-8 ultramafic intrusion from the Wajrakarur kimberlite field of Southern India and its relation to the worldwide Mesoproterozoic (~1.1 Ga) magmatism of kimberlite and related rocks. Geoscience Frontiers, 11 (3) 793-805 doi:10.1016/j.gsf.2019.07.010 | Journal (article/letter/editorial) | | interpreted as being part of a 41 single large igneous province comprising of the Kalahari, Australian, West Laurentian...Eastern Dharwar (equivalent to the Central Dharwar province) and the 115 Western Dharwar craton (Jayananda...wollastonite (Ca), 6 139 rhodonite (Mn) and hematite (Fe), and synthetic pure oxides for TiO2, Cr2O3...depletion patterns to 309 that of aillikite and mela-aillikite gives additional support to the suggested... Sr-Nd isotope compositions 323 Aillikite and mela-aillikite worldwide generally show isotopically |  | | Journal (article/letter/editorial) | | (Kjarsgaard & Peterson 1991, Kjarsgaard 1998). Minor hematite occurs as irregular schlieren. Upon weathering...opaque owing to the presence of submicroscopic hematite. Some lapilli contain abundant globules of dolomite...intergrowths of dolomite + chlorite + quartz + hematite, are found in samples 03, 87 and 92A. The lapilli...aphyric, in 03 they are porphyritic, with chlorite + hematite + quartz pseudomorphs most probably after olivine...surrounding a core of fine-grained dolomite – chlorite – hematite intergrowth. The pseudomorphs contain concentric |  | | Report (issue) | | Acknowledgements.—The Provincial Commissioner, Nyanza Province, and the District Commissioner, Kisii, rendered...Adapted from a map of the erosion surfaces of Nyanza Province by R. M. Shackleton (1951B) with added information...(Kaniamwia fault, Mfanganu fault) Upper Kisingiri mela-nephelinite and subsidiary melilitite lavas extruded...Kaniamwia deposited Lower Kisingiri nephelinite and mela-nephelinite lavas extruded from fissures radiating...detailed comparison of the successions in Nyanza Province has been given by .Huddleston (op. cit. pp. 6 |  | | Report (issue) | | Minerals ore highly altered. and alteration to hematite. Matrix Ap observed as inclusions in Cpx Both...clinopyroxene; Ep, epidotej G, goethite; Gl, glass; Hm, hematite; K, kaolinitej L, leucoxenej M, magnetite; N,...Gl, glass; H, hornblende; He, heulandite; Hm, hematite; 01, olivine; Or, orthoclase; Opx, orthopyroxene;...1 .76 0.184 0.24 1.41 0.92 diorite <8 981 Mela- 99.77 0.18 0.32 0.97 0.142 0.20 0.77 1...82 3.12 2.90 7.49 4.03 6.32 diorite <79 676 Mela- 99.51 0.10 0.07 0.95 0.1 0.23 0.60 0.73 |  | | Book | | trachyte Ciminite lamprosyenitic II", 5, 2, 2 Mela olivine leucitite Batukite pyroxenolitic IV,...therefore be better to call the high-alumina basalts mela andesites, indicating thus their natural relationship...their high T values and should be joined with the mela andesites. From the petrological and magmatological...the alkali content in Japanese lavas. Averages: A mela andesites and andesites, LA latiandesites, D dacites...ferric state, the calculation of magnetite (Mt) or hematite (Hm) merely on the basis of the figure for Fe2 |  | | Journal (article/letter/editorial) | | Potassiumfeldspar Pyroxene Homblende Magnetite Hematite llmenite Garnet Garnet Hydrous/ anhydrous hydrous...1g-a 4.3 x 10-7 6.3 x 10 630 assumed equal to hematite 2 x 10-6 assumed equal to hydrous value Activation...it was assumedthat a similar effect exists for hematite (isostructural with ilmenite). Castle and Surman...Hydrous 6'60 vatue meaAnhydrous sureo Grenville mela-anorthosite (present study) Pl porph An@ 4.0 0.5...retrogradehistory of the Parry Sound ShearZone,Grenville Province, Canada.Journal ofMetamorphic Petrology, lO, 763-77 |  | | Book | | example, magnetite (Fe304) is highly magnetic, but hematite (FeoOs) is only shghtly magnetic. It is now...characterized by Corundum syenite, etc. OXIDES HEMATITE, General features. Fe203 Hexagonal rhombohedral...disseminated hematite or a manganese compound. feldspar crystals in Also, many many minerals to hematite Grain...Grain pink granites contain tiny plates of hematite. oxidized lava flows are red because of oxidation...is a dark-colored por- to indicate dark, and mela-. light-colored porphyritic rock. A phyry. ALTERATIONS |
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